package com.yoomiito.app.utils;

import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;
import android.util.Log;

import java.util.Iterator;
import java.util.Stack;

/**
 * 应用程序Activity管理类：用于Activity管理和应用程序退出
 */
public class AppManager {

    private static Stack<Activity> activityStack;
    private static AppManager instance;

    private AppManager() {
    }

    /**
     * 单一实例
     */
    public static AppManager getAppManager() {
        if (instance == null) {
            instance = new AppManager();
        }
        return instance;
    }

    /**
     * 添加Activity到堆栈
     */
    public void addActivity(Activity activity) {
        if (activityStack == null) {
            activityStack = new Stack<>();
        }
        activityStack.add(activity);

//        Iterator<Activity> iterator = activityStack.iterator();
//        while (iterator.hasNext()) {
//            Activity activity1 = iterator.next();
//            L.i("ActName: "+activity1.toString());
//        }
    }

    /**
     * 获取当前Activity（堆栈中最后一个压入的）
     */
    public Activity currentActivity() {
        Activity activity = activityStack.lastElement();
        return activity;
    }

    /**
     * 结束当前Activity（堆栈中最后一个压入的）
     */
    public void finishActivity() {
        Activity activity = activityStack.lastElement();
        finishActivity(activity);
    }

    /**
     * 结束指定的Activity
     */
    public void finishActivity(Activity activity) {
        if (activity != null) {
            if (activityStack != null) {
                activityStack.remove(activity);
                activity.finish();
            }
        }
    }

    /**
     * 结束指定类名的Activity
     */
    public void finishActivity(Class<?> cls) {
        for (Activity activity : activityStack) {
            if (activity.getClass().equals(cls)) {
                finishActivity(activity);
            }
        }
    }

    /**
     * 结束指定类名以外的所有Activity
     */
    public void finishOtherActivity(Class<?> cls) {
        Iterator<Activity> iterator = activityStack.iterator();
        while (iterator.hasNext()) {
            Activity activity = iterator.next();
            if (!activity.getClass().equals(cls)) {
                if (activity != null) {
                    activity.finish();
                }
                iterator.remove();
            }
        }
    }

    /**
     *
     */
    public void printAllActivity() {
        Iterator<Activity> iterator = activityStack.iterator();
        while (iterator.hasNext()) {
            Activity activity = iterator.next();
            L.i("ACT: " + activity);
        }
    }

    /**
     * 结束所有Activity
     */
    public void finishAllActivity() {
        for (int i = 0, size = activityStack.size(); i < size; i++) {
            if (null != activityStack.get(i)) {
                activityStack.get(i).finish();
            }
        }
        activityStack.clear();
    }

    public boolean isTopTaskByActivity(Class<?> cls) {
        return activityStack.get(0).getClass().equals(cls);
    }

    /**
     * 退出应用程序
     */
    public void AppExit(Context context) {
        try {
            //友盟数据保存
//            MobclickAgent.onKillProcess(context);
            finishAllActivity();
            ActivityManager activityMgr = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
            activityMgr.killBackgroundProcesses(context.getPackageName());
            System.exit(0);
        } catch (Exception e) {
        }
    }
}